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The maintained road system within the unincorporated County of Orange is comprised of 312 centerline miles of pavement which includes 254 miles of local residential streets and 58 miles of arterial highways. The County maintains all the features of the road system within its right-of-way (excepting utilities) which include everything from street sweeping and fence repair to crack sealing and pavement overlays. The road system is monitored daily by the Operations and Maintenance Inspection Section staff and work orders are continually generated for County work crews and contractor to perform any required maintenance.
There are many private streets within the unincorporated portions of the County. These streets are not a part of the County road system and are the responsibility of the individual land owners or a community homeowners' association for any maintenance. If you are within a private community where you are paying association fees, your homeowner's association arranges and performs your road maintenance.
If you are not sure whether you are within the unincorporated County maintained road system, please refer to our listing of maintained streets within the Road Index database listing.
Road Index List of Maintained Streets
The County of Orange has over 130 miles of underground storm drain facilities. The Operations & Maintenance Division is responsible for inspection, maintenance and repair of the storm drain system in the public right-of-way and in drainage easements. This includes clearing blocked drains, removing debris from storm drain structures, and cleaning and repairing damaged drainpipes.
Storm drains are designed to handle normal water flow, but occasionally during heavy rain, flooding will occur. Our goal is to limit the number of flooding incidents by keeping the drains clear with regular maintenance and cleaning.
The Engineering Support Section of the Operations and Maintenance Division provides engineering services and support to the maintenance functions of the division. These services include providing recommendations for maintaining and improving a variety of Operations And Maintenance facilities including streets, sidewalks, and curbs and gutters access ramps, sidewalk, channels and culverts, bridges, trails and park facilities. The section is responsible for maintaining inventories of the pavement condition using the OCPMS (Orange County Pavement Management System), the street inventory (Road Index) and the sign inventory through the TCDI (Traffic Control Device Inventory).
The County does not maintain street lights located in the unincorporated areas of Orange County and within public right-of-way. These lights are the property of the energy service providers (Southern California Edison (SCE) or San Diego Gas and Electric (SDG&E)) within the area and can usually be identified by checking a monthly billing receipt. Streets lights within private communities or on private property are usually the responsibilities of the property owner or community association.
The Operations and Maintenance Division repairs many potholes each year through a private contractor. A pothole is an area of the roadway that is missing a piece or pieces of pavement and a hole has been created. As the diagrams show, water is the main culprit and the pavement continues to deteriorate and the pothole worsens as vehicles run over them or hit them.
The County of Orange, Operations and Maintenance, Signage Services maintains, installs, designs, and fabricates signs and environmental graphics to visually communicate vital information by using legally appropriate graphics and installation formats. By using various signage systems for such diverse concerns as traffic, construction, regulation, and conceptual depiction of County resources and services, the County of Orange serves the public with vigilant awareness of signage needs and consistently addresses and refines its production and maintenance services.
Coming Soon...
Street sweeping is identified by the Environmental Protection Agency as a Best Management Practice (BMP) for water quality control improvement. Street sweeping removes trash and debris, as well as sediment, fertilizers, heavy metals and floatable material before it can reach our oceans.
The County's contractor, West Coast Arborists, trims County-owned trees. (If you live on a non-incorporated residential street, County-owned trees grow in the parkway - the strip of land between the sidewalk and the street.) As per our contract, WCA follows a pre-determined, high-production schedule to keep tree trimming as cost-effective as possible. We are unable to trim trees strictly for aesthetic purposes. However, we will trim a tree if it presents a hazard, and we are usually able to respond to dangerous situations rapidly.

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